:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #5b6475;
  --primary: #0a3dcc;
  --primary-dark: #072c94;
  --accent: #15a5ff;
  --border: #d8e0ef;
  --success: #0f9d58;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  background: linear-gradient(180deg, #eef4ff 0%, var(--bg) 48%, #ffffff 100%);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
.page { max-width: 1120px; margin: 0 auto; padding: 32px 20px 72px; }
.hero {
  background: radial-gradient(circle at top right, rgba(21,165,255,0.22), transparent 32%),
              linear-gradient(135deg, #0b2f9f 0%, #0a3dcc 58%, #0e67ff 100%);
  color: white;
  border-radius: 28px;
  padding: 36px;
  box-shadow: 0 26px 50px rgba(10, 61, 204, 0.18);
}
.brand { display: flex; align-items: center; gap: 16px; margin-bottom: 22px; }
.brand img { width: 68px; height: 68px; }
.brand h1 { margin: 0; font-size: 2rem; }
.brand p { margin: 4px 0 0; color: rgba(255,255,255,0.84); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.95fr);
  gap: 24px;
  align-items: start;
}
.hero-copy h2 { margin: 0 0 12px; font-size: clamp(2rem, 3vw, 3rem); line-height: 1.08; }
.hero-copy p { margin: 0 0 22px; color: rgba(255,255,255,0.9); max-width: 60ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 18px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 16px;
  border: 1px solid transparent;
  font-weight: 700;
}
.btn-primary { background: white; color: var(--primary); }
.btn-secondary { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.2); color: white; }
.meta { display: flex; flex-wrap: wrap; gap: 18px; color: rgba(255,255,255,0.88); font-size: 0.95rem; }
.card {
  background: rgba(255,255,255,0.98);
  color: var(--text);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 18px 40px rgba(12, 32, 91, 0.14);
}
.card h3 { margin: 0 0 14px; font-size: 1.15rem; }
.facts { display: grid; gap: 12px; }
.facts div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.facts div:last-child { border-bottom: none; padding-bottom: 0; }
.label { color: var(--muted); }
.section { margin-top: 28px; }
.section h3 { margin: 0 0 14px; font-size: 1.4rem; }
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 20px;
}
.panel h4 { margin: 0 0 10px; font-size: 1.05rem; }
.panel p, .panel li { color: var(--muted); line-height: 1.55; }
.panel ul { margin: 0; padding-left: 18px; }
.checksum {
  word-break: break-all;
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 0.92rem;
}
.note {
  border-left: 4px solid var(--accent);
  padding: 14px 16px;
  background: #eef7ff;
  border-radius: 0 14px 14px 0;
  color: #114169;
}
.footer {
  margin-top: 32px;
  color: var(--muted);
  font-size: 0.95rem;
}
@media (max-width: 920px) {
  .hero-grid, .grid { grid-template-columns: 1fr; }
  .hero { padding: 26px; }
}